Not sure if mine is same issue.  I am still seeing latency on one of my 
apps - but appears to be coming from instances stopping/restarting. 
 Sometimes the instance is stopped less than a minute after starting and is 
only occurring with one of my apps - the others are fine.

This is during an expected low traffic time for my app - when the instance 
chart would normally show a flat line with one instance handling 
everything.  Now it is a sawtooth chart - bringing down an instance and 
starting another about every minute.  

I reverted to previous version of the app just in case something odd got 
introduced - but no change.

Jeff

On Tuesday, February 2, 2016 at 11:12:43 AM UTC-6, Keith Marsh wrote:
>
> Ugh, spoke too soon.  Latency and 500s back.
>
>
> On Tuesday, 2 February 2016 10:30:49 UTC, Keith Marsh wrote:
>>
>> The problem looks to have been resolved at 21:00 GMT.  I spoke with a 
>> member of the trace team, and my issue was answered with requests for my 
>> source.  
>>
>> Jeff's observation about cloud debugger is very interesting, though I 
>> didn't see that in my traces.  I just saw a 6 second delay before my first 
>> RPC.  
>>
>> I was suffering 500 (error 121) on about 5% of my requests.
>>
>> Keith
>>
>>
>> On Monday, 1 February 2016 16:48:09 UTC, Keith Marsh wrote:
>>>
>>> Moving this to the issue tracker.
>>>
>>> On Monday, 1 February 2016 14:25:24 UTC, Keith Marsh wrote:
>>>>
>>>> Hi
>>>>
>>>> On a project's default module that normally returns sub 100mS latency, 
>>>> I'm seeing latency of > 6,000mS since 10am this morning when cloud 
>>>> monitoring reported problems (and has been on and off since).
>>>> I've switched from using shared memcache to private to see if that was 
>>>> the issue.
>>>> Tracing isn't reporting RPC as the issue.  Task queues are fine, and 
>>>> other modules are fine.
>>>> The project hasn't been updated since Nov 15.
>>>> I have other projects that aren't seeing any latency issues, and 
>>>> wondered if I'm in an A/B test of some sort.
>>>>
>>>> Anyone else suffering latency issues ?
>>>>
>>>> Thanks
>>>>
>>>> Keith
>>>>
>>>

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